Petroleum Bulk Plant and Gas Station - Buffalo, Missouri
Project Description
A petroleum marketer contracted Environmental Works, Inc. (EWI) for emergency response cleanup and follow-up site characterization at a petroleum bulk plant and gasoline station. These efforts were performed in response to an April 2000 gasoline spill into a roadside ditch. Emergency response activities included excavation within the drainage ditch, installation of two recovery trenches, and the recovery of 75 gallons of free product.
Site characterization activities were initiated in 2002 when EWI performed a passive soil-gas investigation using Gore-Sorbers®. This innovative technology was implemented to provide a cost effective method of targeting future monitoring points due to the presence of multiple potential source areas. Based on the results of the soil-gas investigation, EWI performed a detailed hydrogeological investigation in 2004 and 2005 that included the following:
- Installation of soil borings and 13 monitoring wells to delineate the extent of contamination in soil and groundwater
- Chemical and geotechnical sampling and laboratory analysis
- Aquifer yield evaluations / conductivity testing
- Tier 1 / Tier 2 Risk Assessment per MDNR guidance
- Risk Management Plan development, implementation, and reporting
- Project completion sufficient for MDNR closure
Project Accomplishments
- Expedited mitigation of a hazardous substance release
- Negotiation of site eligibility with the Petroleum Storage Tank Insurance Fund (PSTIF) to help finance the cleanup
- MDNR No Further Action Letter